[net income] / [cash invested] = cash on cash.Also, I get the sense that you don't have a good grasp on taxes. 

I know I am just starting out, but I have a great grasp on the basics, so any level of book from beginner to expert is great to me!

I would like to shadow you in person and be there when things to take place to get a better grasp of how the strategy is actually used.

A full grasp of revenue opportunities (including market rents, as others have mentioned) and cost burden, including taxes, insurance, permits, etc. is necessary to actually gauge the opportunity. 

I got a good grasp of flipping, rental arbitrage, normal rentals and a one that caught my attention is rent to own with a down payment 20%-30% with a higher monthly payments and shorter terms 3-5 years (mostly with apartments)My Plans:1.

I'm not sure if I grasp what you are saying. 

Does anyone have a grasp on this?

Otherwise, if you rely on using calculators developed by other people you don't get a good grasp on how multi-unit properties are so much more profitable.If you don't use a good business model then you be investing blindly and you will rely on advice from all the other investors who are blind.

His FREE content on YouTube is simple enough for 'newbies' to grasp, so that you can avoid info overload by chasing a bunch of different strategies at once.

You're grasping at straws here, IMO, Josephine.